Source: China – South China Morning PostA Chinese national who tested positive for Covid-19 after arriving from Hong Kong is being investigated for illegally crossing the border, authorities in Shanghai said on Friday.The person entered the mainland on Sunday and arrived in Shanghai the next day by high-speed train from the southern city of Zhuhai in Guangdong province, according to the Shanghai health commission.Guangdong authorities alerted Shanghai on Wednesday about the suspected illegal crossing and Shanghai officials isolated…Read More